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VB.NET Val, Asc and AscW Functions

Use the Val, Asc and AscW built-in Functions to convert characters to other types.
Val, Asc. Val, Asc and AscW convert characters. From the Char, we get either its integer representation or its numeric representation. Using these Functions, we convert characters into the appropriate integer value.
Example. We use these functions with two characters. The character "a" has a Val of 0 and an Asc of 97. In ASCII, the letter "a" is represented with the number 97. The Val function returned zero because "a" is not a number itself.
VB.NET program that uses Val, Asc, AscW Module Module1 Sub Main() ' Use Val and AscW on char. Dim c As Char = "a"c Dim i As Integer = Val(c) Dim a As Integer = Asc(c) Console.WriteLine(c) Console.WriteLine(i) Console.WriteLine(a) ' Another character. Dim c2 As Char = "2"c Dim i2 As Integer = Val(c2) Dim a2 As Integer = AscW(c2) ' AscW is similar to Asc Console.WriteLine(c2) Console.WriteLine(i2) Console.WriteLine(a2) End Sub End Module Output a 0 97 2 2 50
The second Char in this example contains the digit "2". Val here returns 2. This is the digit contained in the character. The AscW function here returns 50. This is the ASCII numeric representation for the character "2".

Note: The Val, Asc and AscW functions are only available in the VB.NET language, not the C# language.

Summary. In this example, we saw how the Val, Asc and AscW Functions are useful in different situations. If you want to convert a Char to its underlying integer representation, the Asc and AscW functions are ideal.

Tip: If you want to get the number from the Char and turn it into an Integer, the Val function is best.

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